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List of 15-letter words containing

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There are 18 fifteen-letter words containing A, H, O, T and V

AUTHORITATIVELYauthoritatively adv. In an authoritative manner, being worthy of trust.
AUTHORITATIVE adv. having or proceeding from authority.
CONSERVATORSHIPconservatorship n. (Law) The legal status of a conservator, similar to guardianship or trusteeship.
conservatorship n. (Law) The state of being under the control of a conservator.
CONSERVATORSHIP n. the office of conservator.
HETERONORMATIVEheteronormative adj. Of or pertaining to the practices and institutions that privilege or value heterosexuality, heterosexual…
HETERONORMATIVE adj. regarding heterosexual relationships as the social norm.
HYPERSALIVATIONhypersalivation n. (Medicine) An excessive flow of saliva.
HYPERSALIVATION n. excessive salivation.
HYPOVENTILATIONhypoventilation n. (Medicine) Respiratory depression, occurring when ventilation is inadequate to perform the necessary…
HYPOVENTILATION n. abnormally decreased speed and depth of breathing.
INTERBEHAVIORALinterbehavioral adj. Between behaviors; applied to a naturalistic, non-dualistic form of psychology.
INTERBEHAVIORAL adj. relating to interbehavior.
INTERBEHAVIOURSinterbehaviours n. Plural of interbehaviour.
INTERBEHAVIOUR n. interaction between multiple individuals, also INTERBEHAVIOR.
NONACHIEVEMENTSnonachievements n. Plural of nonachievement.
NONACHIEVEMENT n. something that is not an achievement.
NONPSYCHOACTIVEnonpsychoactive adj. Not psychoactive.
OVERACHIEVEMENToverachievement n. A greater than anticipated achievement.
OVERACHIEVEMENT n. excessive achievement.
OVERENTHUSIASMSoverenthusiasms n. Plural of overenthusiasm.
OVERENTHUSIASM n. an excessive enthusiasm.
OVERHASTINESSESOVERHASTINESS n. the state of being overhasty.
OVERORCHESTRATEoverorchestrate v. (Transitive) To plan too elaborately.
OVERORCHESTRATE v. to orchestrate excessively.
PHOSPHORYLATIVEphosphorylative adj. Relating to phosphorylation.
PHOSPHORYLATIVE adj. of or like phosphorylate.
PHOTOENGRAVINGSphotoengravings n. Plural of photoengraving.
PHOTOENGRAVING n. any process of engraving by aid of photography, esp. from relief plates.
PHOTOREFRACTIVEphotorefractive adj. (Physics) of or relating to a change in refractive index in the presence of light.
PHOTOREFRACTIVE adj. designating or relating to surgical procedures in which a laser is used to reshape the cornea and correct refractive errors such as myopia or astigmatism; esp. in photorefractive keratectomy.
SCHIZOAFFECTIVEschizoaffective adj. (Psychiatry) Combining the symptoms of schizophrenia with those of bipolar disorder.
schizoaffective n. A person who has a schizoaffective disorder.
UNAUTHORITATIVEunauthoritative adj. Not authoritative.
UNAUTHORITATIVE adj. not authoritative.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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